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package p3;

import p3.logicaNegocio.Comprador;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author pargon
 */
@WebServlet(name = "procesarPedido", urlPatterns = {"/procesarPedido"})
public class procesarCompra extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
       String nombre = request.getParameter("nombre");
       String direccion = request.getParameter("direccion");
       String dni = request.getParameter("DNI");
       String tarjeta = request.getParameter("tarjeta");
       Comprador c = new Comprador(nombre,direccion,dni,tarjeta);
       
       // Podriamos añadir validaciones más estrictas, no es necesario
       if( ValidaDNI(dni) && isNumber(tarjeta)) {
           HttpSession session = request.getSession(true);
           session.setAttribute("comprador", c);
           response.sendRedirect("resguardo.jsp");
       }
       else response.sendRedirect("formalizarCompra.jsp");
        
    }
    boolean ValidaDNI(String DNI){
        char letra;
        DNI = DNI.replace("-", "");
        Integer num = Integer.parseInt(DNI.substring(0, 8));
        letra = DNI.charAt(DNI.length()-1);
        String lockup = "TRWAGMYFPDXBNJZSQVHLCKE";
        return lockup.charAt(num % 23) == letra;
    }
    boolean isNumber(String tarjeta) {
        for(int i = 0; i < tarjeta.length(); i++) {
            char a = tarjeta.charAt(i);
            if (a < '0' || a > '9') return false;
        }
        return true;
    }
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
